What am I asking here are privacy issues, not security.
When I search web using the internet given from wi-fi on phone, my ISP see what I am looking. But what about phone provider (google/apple). Do they know the same data (more/less) like ISP?
I am not asking what is going on when you search web on mobile phone (it may be another topic), but when you use phone as hotspot for e.g. laptop.